环丙烷-1,1-二羧酸环二酯的简易合成

A Simple Method for Synthesis of Cyclopropane-1,1-dicarboxylic Cyclodiesters

用 2 取代 1 ,3 二恶烷 4 ,6 二酮 ( 2a～ 2c)和 1 ,2 二溴乙烷在无水碳酸钾作用下于 55～ 60℃缩合成标题化合物 ,产率达 75%～ 77%。经1HNMR和IR测试 ,确定了其结构。

The title compound was synthesized from 2 substitued 1,3 dioxane 4,6 dione and 1,2 dibromoethylane by the action of K\-2CO\-3 at 55-56 ℃.The overall yield was 75%-77%.Data of m.p., 1HNMR and IR of the products in each step were given.